Paula Patton and Robin Thicke

Paula Patton and Robin Thicke

'Blurred Lines' hitmaker Robin Thicke flew to Canada to talk with wife Paula Patton last week. 

The singer who announced yesterday he and his actress wife were separating after almost nine years of marriage, cited throat problems when he axed a planned concert in Atlanta on Friday, but insiders say he jetted off to Vancouver after Paula told him she wanted to end their union.

According to gossip website TMZ, the couple had a long conversation in which they acknowledged they hadn't been getting along and had argued a lot.

Robin, 36, then "reluctantly" agreed to end his marriage to the 38 year old actress, but was described as being "very upset". And despite making the decision on Friday, the pair were seen enjoying a day out at Disneyland in California with their son on Sunday.

The couple said in a statement announcing their split they will always "be best friends," but "mutually decided to separate at this time" and insiders weren't surprised by the news.

A source said: "It has been a long time coming. It is not a shock to Robin or Paula, and it is something they have discussed for a long time."

Another insider said: "Their marriage was unravelling for a long time."